Is a credible alternative to fossil fuels possible? For which countries? With what disadvantages? To answer these questions, make way for the first part of our large series "Towards a post-carbon world?" On the program: three reports in countries qualified as "models". Episode 1: Norway. At sea, on land, in the air ... the Scandinavian kingdom is betting on electric mobility to reduce its polluting emissions. Paradox: this country is also a king of oil!